Back Mod: Grid Back

Changes the foam on the back to a grid-work of removable and interchangeable 2" x 2" foam cubes.
Cubes are attached to a 1/2" polyurethane foam base with hook and loop material. Customize the back by pulling the foam cubes out to carve or to replace with different density foam.
Provides added comfort as foam cubes work independently

Note: 2" of foam and a stretchable cover, such as premium Lycra (Part No. 51), are recommended